標題: | 多代擴散模型實證研究 ─ 以日本地區電信業者 NTT DoCoMo為例 The empirical research of multi-generational diffusion model – a case of Japan operator NTT DoCoMo |
作者: | 張正明 Cheng-Min Chang 唐瓔璋 Edwin Tang 管理學院經營管理學程 |
關鍵字: | 多代擴散模型;第三代行動通訊系統;創新係數;模仿係數;市場潛量;Multi-generational diffusion model;The third generation mobile system;Coefficient of innovation;Coefficient of imitation;Market potential |
公開日期: | 2004 |
摘要: | 隨著通訊技術的不斷進步,通訊系統也由第二代行動電話演進到第三代行動電話,系統業者投入大規模的資金研發新技術,而電信業者也持續投入大量資金建置新的通訊系統,但是第三代行動電話市場會不會起飛及用戶的市場潛量是多少,是一個電信業者投資設備前的重要議題。由於新產品失敗率高達95% (Deloite and Touche (1998)),因此如何建置一套有效的用戶擴散模型以降低設備投資的風險並協助行銷策略的制定,對電信業者尤為重要,因為其設備建置所需投入的金錢與時間較其他產業龐大。
本研究以日本電信業者NTT DoCoMo的第二代行動電話及第三代行動電話用戶擴散為研究對象,資料取自日本的電信業者協會的行動電話用戶資料庫,分別為1996年2月到2005年1月間共108期的第一世代2G PDC行動電話與2001年2月到西元2005年1月間共40期的第二個世代3G WCDMA行動電話累積用戶數。研究以 SAS 做為資料分析的工具並使用非線性回歸及非線性最小平方法做為資料分析與參數估計的方法。
本研究比較了不同的多代擴散模型對NTT DoCoMo的多代用戶數擴散預測的配適,結果證實Bass and Bass (2004) 提出的多代擴散模型在世代採用不同創新係數與模仿係數下對第三代行動電話用戶數預測的配適效果與預測能力最好。研究發現針對第三代行動電話用戶擴散創新係數小於模仿係數,因此業者制定行銷策略時,除了吸引創新族群,也要讓他們對模仿者族群造成口耳相傳的影響力,造成第三代行動電話用戶數的擴散。 As the 2G mobile systems are continually evolving into 3G technologies, the system vendors and mobile operators put a lot of investment to build the new generation of mobile systems. Before investing new equipment or product, it is very important for investors to know what the potential market size is. Since the new product launch fail rate is up to 95% (Deloite and Touche 1998), it is very important for mobile operators to gauge how the market will evolve to minimize risks of investment. This research studies Japan NTT DoCoMo 3G subscribers’ diffusion growth. The data is taken from Telecommunications Carriers Association subscriber database in 2G PDC and 3G WCDMA subscribers during the period of 02/1996 to 01/2005. Norton and Bass (1986) and Bass and Bass (2004) multi-generational models with different coefficients of innovation and imitation are applied. The results indicate multi-generation with different innovation and imitation coefficients best fit to NTT DoCoMo 3G subscribers forecast. In addition, the diffusion growth pattern shows that coefficient of innovation is smaller than coefficient of imitation. This suggests that operator should acquire not only the new adaptors but also apply “world of mouth” strategy to develop the market. |
URI: | http://140.113.39.130/cdrfb3/record/nctu/#GT009274516 http://hdl.handle.net/11536/77937 |
顯示於類別: | 畢業論文 |